Open the folding wing and gently press the button. In just over 10 minutes, a power line crossing the Huangyang Mountain will be completed smoothly. In the past, the work was done, and it took more than four hours for the workers to go over the mountains. The energy and power plant of Shangang Laiwu Branch introduced the UAV technology into the inspection of high-voltage transmission lines, which improved the work efficiency, reduced the operation and maintenance cost of the power grid, and became a thing of the past. The picture shows that the factory staff is operating the drone for line inspection.